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The reaction A + B ⇆ C is an exothermic reaction; if an equilibrium mixture of A, B, and C is heated slowly, what would happen to the concentrations of each species?
  • a)
    All three concentrations decrease
  • b)
    All three concentrations increase
  • c)
    A and B increase, C decreases
  • d)
    A and B decrease, C increases
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
The reaction A + B C is an exothermic reaction; if an equilibrium mix...
An exothermic reaction produces heat as a product.
If a product of a reaction is added to an equilibrium mixture of elements of the reaction, the equilibrium will shift towards reactants.
The concentration of reactants will increase if an equilibrium mixture of A, B, and C is heated slowly.
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Most Upvoted Answer
The reaction A + B C is an exothermic reaction; if an equilibrium mix...
Understanding the Reaction
The reaction A + B ⇌ C is exothermic, meaning it releases heat when forming product C from reactants A and B. At equilibrium, the concentrations of A, B, and C remain constant.
Effect of Heating on Equilibrium
When the equilibrium mixture is heated, the system responds according to Le Chatelier's Principle, which states that a system at equilibrium will adjust to counteract any changes imposed on it.
Shifting the Equilibrium
- Heating: Adding heat to an exothermic reaction effectively increases the temperature.
- Reaction Shift: To counteract this increase in temperature, the system will shift the equilibrium position to favor the endothermic direction (the reverse reaction in this case).
Concentration Changes
As a result of this shift:
- A and B Increase: The reaction will favor the formation of reactants (A and B) to absorb the added heat.
- C Decreases: The concentration of product C will decrease as the system shifts to produce more reactants.
Conclusion
Therefore, upon heating the equilibrium mixture, the concentrations will change as follows:
- A and B concentrations will increase.
- C concentration will decrease.
Thus, the correct answer is option 'C': A and B increase, C decreases.
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The reaction A + B C is an exothermic reaction; if an equilibrium mixture of A, B, and C is heated slowly, what would happen to the concentrations of each species?a)All three concentrations decreaseb)All three concentrations increasec)A and B increase, C decreasesd)A and B decrease, C increasesCorrect answer is option 'C'. Can you explain this answer? for MCAT 2025 is part of MCAT preparation. The Question and answers have been prepared according to the MCAT exam syllabus. Information about The reaction A + B C is an exothermic reaction; if an equilibrium mixture of A, B, and C is heated slowly, what would happen to the concentrations of each species?a)All three concentrations decreaseb)All three concentrations increasec)A and B increase, C decreasesd)A and B decrease, C increasesCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for MCAT 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The reaction A + B C is an exothermic reaction; if an equilibrium mixture of A, B, and C is heated slowly, what would happen to the concentrations of each species?a)All three concentrations decreaseb)All three concentrations increasec)A and B increase, C decreasesd)A and B decrease, C increasesCorrect answer is option 'C'. Can you explain this answer?.
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